Coffee maker base



FIG. 1 is a perspective view as seen from the top, front and right side of a coffee maker base showing the new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom view thereof.

Specific features shown in broken lines do not form any part of or otherwise limit the claimed design. 

I claim the ornamental design for a coffee maker base, as shown and described. 